Bump pip-tools from 5.5.0 to 6.0.1 in /requirements

Bumps [pip-tools](https://github.com/jazzband/pip-tools) from 5.5.0 to 6.0.1.
- [Release notes](https://github.com/jazzband/pip-tools/releases)
- [Changelog](https://github.com/jazzband/pip-tools/blob/master/CHANGELOG.md)
- [Commits](jazzband/pip-tools@5.5.0...6.0.1)

Signed-off-by: dependabot[bot] <support@github.com>

requirements/requirements-ci.txt

@@ -284,12 +284,7 @@ idna==2.8
 importlib-metadata==3.7.3
     # via
     #   -r requirements-dev.txt
-    #   flake8
-    #   flake8-comprehensions
-    #   jsonschema
     #   pluggy
-    #   pyinstaller
-    #   pytest
 incremental==17.5.0
     # via
     #   -r requirements-dev.txt
@@ -340,9 +335,7 @@ lru-dict==1.1.6
     #   -r requirements-dev.txt
     #   web3
 macholib==1.14
-    # via
-    #   -r requirements-ci.in
-    #   pyinstaller
+    # via -r requirements-ci.in
 markupsafe==1.1.1
     # via
     #   -r requirements-dev.txt
@@ -419,6 +412,10 @@ pathspec==0.8.0
     #   black
 pdbpp==0.10.2
     # via -r requirements-dev.txt
+pep517==0.10.0
+    # via
+    #   -r requirements-dev.txt
+    #   pip-tools
 pexpect==4.8.0
     # via
     #   -r requirements-dev.txt
@@ -435,7 +432,7 @@ pillow==8.1.1
     # via
     #   -r requirements-dev.txt
     #   matrix-synapse
-pip-tools==5.5.0
+pip-tools==6.0.1
     # via -r requirements-dev.txt
 pluggy==0.12.0
     # via
@@ -667,6 +664,7 @@ toml==0.10.2
     # via
     #   -r requirements-dev.txt
     #   black
+    #   pep517
     #   pylint
     #   pytest
 toolz==0.9.0
@@ -689,19 +687,15 @@ twisted[tls]==21.2.0
 typed-ast==1.4.0
     # via
     #   -r requirements-dev.txt
-    #   astroid
     #   black
     #   mypy
 typing-extensions==3.7.4.3
     # via
     #   -r requirements-dev.txt
     #   black
-    #   importlib-metadata
     #   matrix-synapse
     #   mypy
     #   signedjson
-    #   structlog
-    #   web3
 typing-inspect==0.4.0
     # via
     #   -r requirements-dev.txt

requirements/requirements-dev.in

@@ -9,7 +9,7 @@
 # -r requirements-docs.txt
 
 # Dependencies
-pip-tools~=5.5.0  # this is used by 'deps.py'
+pip-tools~=6.0.1  # this is used by 'deps.py'
 
 # Linting
 flake8

requirements/requirements-dev.txt

@@ -253,11 +253,7 @@ idna==2.8
 importlib-metadata==3.7.3
     # via
     #   -r requirements.txt
-    #   flake8
-    #   flake8-comprehensions
-    #   jsonschema
     #   pluggy
-    #   pytest
 incremental==17.5.0
     # via
     #   treq
@@ -366,6 +362,8 @@ pathspec==0.8.0
     # via black
 pdbpp==0.10.2
     # via -r requirements-dev.in
+pep517==0.10.0
+    # via pip-tools
 pexpect==4.8.0
     # via
     #   -r requirements-dev.in
@@ -376,7 +374,7 @@ pickleshare==0.7.5
     # via ipython
 pillow==8.1.1
     # via matrix-synapse
-pip-tools==5.5.0
+pip-tools==6.0.1
     # via -r requirements-dev.in
 pluggy==0.12.0
     # via pytest
@@ -561,6 +559,7 @@ toml==0.10.2
     # via
     #   -r requirements.txt
     #   black
+    #   pep517
     #   pylint
     #   pytest
 toolz==0.9.0
@@ -577,19 +576,15 @@ twisted[tls]==21.2.0
     #   treq
 typed-ast==1.4.0
     # via
-    #   astroid
     #   black
     #   mypy
 typing-extensions==3.7.4.3
     # via
     #   -r requirements.txt
     #   black
-    #   importlib-metadata
     #   matrix-synapse
     #   mypy
     #   signedjson
-    #   structlog
-    #   web3
 typing-inspect==0.4.0
     # via
     #   -r requirements.txt